{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7921-5AD00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7921-5AD00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7921-5AD00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7921-5AD00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1500 front connector module, 40-pole, 24 V rated, 1 A rated current, screw-type terminals, direct mounting.","salesMarkdown":"The Siemens 6ES7921-5AD00-0AA0 is a 40-pole front connector module for the SIMATIC S7-1500 system, designed specifically for 2A output modules. It carries a rated voltage of 24 V DC and a rated current of 1 A per pole, with a total current maximum of 3 A when mounted horizontally. ## Wiring and termination specifics Terminals are at the top of the module, requiring a 3.5 mm screwdriver blade and a tightening torque of 0.4 to 0.7 N·m. Stripped length is 10 mm for both solid and ferruled conductors. Finely stranded wire with core end processing accepts 0.25 to 1.5 mm²; without processing, up to 2.5 mm². Up to two wires per connection are allowed, provided the sum of cross-sections fits within a single ferrule. The maximum wire length between the front connector module and the terminal module is 30 m. No end cover plate is required. The insulating body material is designated as 'other' (not standard plastic). It is a mature, active line item suitable for BOM freeze and routine replenishment.","metaTitle":"Siemens 6ES7921-5AD00-0AA0 Front Connector Module, 40-pole,","metaDescription":"Siemens 6ES7921-5AD00-0AA0 front connector module for SIMATIC S7-1500. 40-pole, rated 24V/1A, stranded 0.5-2.5mm². Mature lifecycle. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC Accessories"],"specifications":{"Stranded":"0.5 ... 2.5 mm²","Rated Value":"24 V","Mounting Type":"direct mounting","Target System":"SIMATIC S7-1500","During Storage":"-40 ... +70 °C","Number Of Poles":"40; of the front connector","Stripped Length":"10 mm","at DC / maximum":"60 V","lifecycle_stage":"mature","During Operation":"0 ... 60 °C","Degree Of Pollution":"2","Number Of Terminals":"4; 2 x 1 x L+, 2 x 1 x M","Product Designation":"Front connector module","Suitability For Use":"2A Output module","at DC / rated value":"24 V","Overvoltage Category":"2","Current / Rated Value":"1 A","Operating Temperature":"0 ... 60 °C","Wire Length / Maximum":"30 m; between front connector module and terminal module","Total Current / Maximum":"3 A; for mounting position horizontal","Color / Of The Enclosure":"black","Position / Of The Terminal":"at the top","Width Of Screwdriver Blade":"3.5 mm","Product Feature / Transparent":"No","Material / Of The Insulating Body":"other","Number Of Cables / Per Connection":"2; Connection for internal system: Combination of 1 or 2 Wires until the sum total of cross sections be achieved in a ferrule.","Number Of Poles / At The 1st Interface":"16; the IDC connector for the connection cable","Outer Diameter / Of The Wire Insulation":"3.1 mm; to the connection of the supply terminal","reference code / according to IEC 81346-2":"XG","Finely Stranded / With Core End Processing":"0.25 ... 1.5 mm²","Finely Stranded / Without Core End Processing":"0.5 ... 2.5 mm²","Tightening Torque / With Screw-Type Terminals":"0.4 ... 0.7 N·m","Product Component / Required / End Cover Plate":"No","with plastic sleeve / according to DIN 46228-4":"Length 10mm","Type Of Electrical Connection / For Power Supply":"Screw-type terminal","design tested acc. to type of protection / EEx e":"No","For Flexible Conductor / With Core End Processing":"0.25 ... 1.5 mm²; End sleeve according to DIN 46228/1 or DIN 46228/4 with plastic collar max. 0.75 mm2","without plastic sleeve / according to DIN 46228-1":"Length 10mm","Type Of Connectable Conductor Cross-Sections / Solid":"No","Type Of Electrical Connection / For Connecting Cable":"Plug-in connection","Number Of The Plug Contacts / Of The Electrical Connection":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$48.26 – $118.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6d57f154fff616166253fab8c566f5cb.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=409893&mlfb=6ES7921-5AD00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7921-5AD00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the stranded wire range for 6ES7921-5AD00-0AA0?","answer":"Stranded conductors from 0.5 to 2.5 mm² are accepted. Finely stranded with core end processing accepts 0.25 to 1.5 mm²."},{"question":"What is the rated voltage of 6ES7921-5AD00-0AA0?","answer":"The rated voltage is 24 V DC, with a maximum of 60 V DC."},{"question":"Where can I buy 6ES7921-5AD00-0AA0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for this part?","answer":"The evidence does not list specific compliance certifications such as RoHS, REACH, UL, or IEC. Contact the supplier for documentation at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7921-5AD00-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7921-5AD00-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}